Improvement in feed-water heaters for steam-boilers



E. P. F'ENN.

Feed-Water Heaters for Steam-Bo'iers..

Patented Feb.17.1874.

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WITNESSES 4 rrnn STATES PATENT OFFICE.o

EDVARD l?. FENN, OF ST. LOUIS, MISSOURL- IMPROVEMENT IN FEED-WATER HEATERS FOR STEAM-BOILERS.

Speccation forming part of Letters Patent No. 147,624, dated February 17, 1374; application iled September 24, 1873.

To cZZ whom t may concern:

Be it known that I, EDWARD P. FENN, of St. Louis, in the coun ty of St. Louis and in the State ot' Missouri, have invented certain new and useful Improvements in Apparatus for Heating Feed-Water; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanyingdrawings and to the letters of reference marked thereon making a part of this specification.

The nature of my invention consists in the construction and arrangement of a feed-water heater for steam-boilers, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will now proceed to describe its construction and operation, referring to the annexed drawing, in which- Figure lis a longitudinal vertical section of my feed-water heater; and Fig. 2 is a plan view of the same, with the top plate removed.

A represents the shell of my feed-water heater, made in any desired form, either cylindrical or with flat sides, or in ova-l form, as shown. This shell is, by a vertical partition, B, near one end, divided into a receiving-chamber, C, and heating-chamber D. G G represent a series of pans, of cast-iron or other suitable material, arranged in step form from the upper end of the partition B downward to the opposite side of the heating-chamber D, and extending the entire distance across the same. These pans are supported upon brackets a a, and the water ilows through them for the purpose of catching deposits which may be precipitated by the action of the heat. In the receiving -chamber O are two screens, b 1),. between which the filtering material E is placed, and below the lower screen is the inlet-pipe H, for the exhaust steam from the engine. Above the upper screen b is formed a chamber, I, from which the water is discharged into the pans G G, over a dam or flange, d, the Awater owing in a broad sheet the entire length of the pan.

f J is the receiving-pipe passing through the liltering material, into the receiving-chamber O, directly on the steam-inlet pipe H. K is the escape-pipe for the exhaust steam after having passed through the sheet of water overilowin g l the pans. c is the hot-water pipe supplying the pump and boilers. f and j" are mud-pipes for discharging mud or water from the receiving-chamber O and heating-chamber D, respectively. Over the center of the pans G G passes a brace, h, with a point, c', resting in a socket in each pan to secure them firmly in position, as shown in Fig. 1. Water entering the receiving-pipe J is discharged upon the exhaust-steam inlet-pipe H, fills the receivingchamber O, and is forced, by pressure from the tank, hydrant, or fountain-head above, upward through the filter E. Sediment which may thus be held below is drawn oft at f. The chamber I above the iilter being lled, the water overflows the dam d, into the rst pan G, forming an unbroken sheet across the heating-chamber D the entire length of the dam el. The rlanges on the back and ends of each pan, except the lowest two, which are marked Gl and G2, are higher than the flanges on the front, so that the water must ilow from one to another over the front ilange, excepting from the pan G1, of which the flanges on each side are equal, and the lowis over each alike into the large pan G2, from which 'it ilows over the lla-nge toward the center of the heating-chamber, this flange being the lowest in this pan. From the reservoir S, formed by the lower portion of the heating-chamberD, the water is drawn through the feed-pipe c, to the pump or boilers. The exhaust steam enters through the pipe H direetly against the sheet of water falling from the two lowest pans G1 G2, and the steam can only reach the escape K by passing through the sheet of water iowin g from one pan to another.

By my device, as thus constructed, the water is passed upward through a ilter before it reaches the heating-chamber or the precipita-ting-paus.

It is a well-established fact that, in proportion as mud or other earthy substances, which can only be extracted by filtration, is mixed withlime or other mineral substances in water, just in that proportion will the latter remain in solution, no matter to what degree of heat it may be subjected. In other words, when both mud and lime are together in solution, the mud must be filtered out before the lime can be precipitated.

, the mud, and then heat it, precipita-ting'the lime.

Great condensation of steam and a most thorough heating of water are accomplished by allowing the'iiater to enter the heating-chamber in a broad sheet over the dam d, and by so arranging this broad sheet in its iioW that a-ll the steam must pass through it before es capinn. rIhe Water is partially heated before filterin gby passing the exhaust-pipe H through the receivii'lgchamber C, and discharging the water from the receiving-pipe .I directly upon it; and said receiving` pipe, being passed through thc fil ter, is protected from cold, and the heat of the filter utilized.

I'Iaving thus fully described my invention, what I cla-im as new, and desire to secure by Letters Patent, is

1. The combination, in a feed-Water heater, of a casing', A, havingl a partition, Il, inclosing areceivingchamber, (j, at the bottom, a steam-inlet pipe, II, a filter, E, above the cham ber, and a Water-inlet pipe, J, which receives the Water at the top and discharges it into the chamber above the steam-inlet pipe, al1 substantially as and for the purposes set forth.

2. The pans G G1 G2, arranged in step form Within the chamber I), as and for the purposes set forth.

3. The combination, with the pans G G1 G2, of the brace h and points z' i, substantially as and for the purposes herein set forth.

4. The dam d, at the top of the partition B, in combination with the chamber I and pans G, as and for the purposes set forth.

5. The combination of the receiving-cham bcr C, stcanrinlet pipe H, filter E, dam d, heating-chamber D, pans G GI G2, and outlet K, all constructed and arranged substantially as and for the purposes herein set forth.

In testimony that I claim the foregoing,` I have hereunto set my hand this 26th day of August, 1873.

v EDI/VARI) l?. PENN.

Witnesses W. J. SULLIVAN, JOHN M. KRUM. 

